Designed for the fully wireless electronic system, the SRAM Red eTap AXS HRD Disc Brake Caliper allows for a customized braking experience for riders of all levels. This hydraulic disc brake system is AXS-enabled, features the intuitive eTap shift logic, and an individualized Contact Point Adjustment. With Bleeding Edge technology, we are provided with an easy and clean brake bleed that naturally fills up the caliper.